<template>
  <div>
       <!-- 面包屑导航栏 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 数据统计表 -->
    <el-card>
      <!-- 2.创建一个echart的 div模板 -->
        <div id="main" style="width: 800px;height: 400px" ></div>
    </el-card>
  </div>
</template>

<script>
//1.第一步
import echarts from 'echarts'

import _ from 'lodash'
export default {
  data () {
    return {
      //需要合并的属性
       options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
    };
  },

  components: {},

  computed: {},
  //3.在执行mounted 时,页面的DOM已经渲染完成了
  async mounted(){
    var myChart = echarts.init(document.getElementById('main'))
    const {data: res} = await this.$http.get("reports/type/1")
    
    if(res.meta.status !==200) {
      return this.$message.error('获取数据失败，请尝试刷新')
    }
    //4。准备数据配置项
    const result = _.merge(res.data, this.options)
    //展示数据
    myChart.setOption(result)
  },

  methods: {
    getOptions(){
      
    }
  }
}
</script>
<style lang='css' scoped>

</style>